Concrete pile-covering.



PATENTED APR. 14, 1908. E. A. KOBTITZ. I

CONCRETE PILE GOVERING.

APLIOATI-JN FILED DEG. 9, 1907.

ATTORNEY WITNESSES FREDERICK A. KOETITZ, OF SAN FRANCISCO, UALIFORNA.

CONCRETE EILE-COVERING.

Specification of Letters Patent.

ne. seines.

Iatented April 14, 1908.

Application led December 9, 1907. Serial No. 405.798.

[h all who/.fn 'it may concern."

'Be il, known that i., FREDERICK A. lion- Trrz, citizen of the UnitedStates, residing in the c'ity and county oi' San Francisco end State ofCztlifornie., have invented new and useful improvements in Con ing, ofwhich the following is n speciiication.

My invention relstes to e concrete casing which is especially designedfor the inclosure or" piies and like struc-tures, end those parts whichare exposed to the ravages of insects, or to other deterioration.

It comprises the combinationv oi' parts whereby the concrete inclosuremay be :tpplied to piles and structures ulresdy in place, and details ofconstruction which will' be more fully explained by reference to theaccompanying drawings'7 in whichw .Figure l. is e vertical section of myinvention. Fig. 2 is transverse section.

in a former patent issued to ine April 25, i905, I have described nconcrete structure l'or the inclosnre of piles and the like. ln mypresent invention l have designed; e means `lor making snch :i structurein segments, and

so connecting these segments tlnit they may be applied to the exteriorol" already driven piles, and in such e nntnner that the piles may beprotected by theinclosure, and a ill ing ol concrete, without thenecessity of -disturbing the super-structure sind interruptingtrat'llic. .Y

The concrete casing is inn-de in segments, here shown heli' cylinders`A. These cylinders may be molded or formed in any suitable or desirednninner, and having e length dependent principally npon the distancebetween the. bottom of the super-structure and the waiter surface. Thesegments nre. l'oi'mcd with ineens for locking them together upon thesides. Seid ineens may comprise a suitably constructed hinge joint; suche. joint here shown es consisting oi eyes 2 hit-vimr the inner endsembedded in the cement oi the sections, so that the eyes may stand inline when the sections ere properly assembled.

Lock rods or pins 3 aire passed through thesev eyes, and thus lforn'ihinges about which the segments nre turnsble so that they may be openedprepa-story to being placed around the pile and afterwards closed.I mayalso be secured by ineens of open triengulnr yolres 5 connecting seidedges in such a manner that u. filling oi cement may be citerwerdsintroduced.

As here shown, the instel .pistes i ere einmerged surl'ac eto anydesired de th.

The edges..

bedded in the concrete nein the meeting edges of' the sections, andthese projecting toward cach other are bent to an acute angle es shownat 5, so that when the edges of the casing ere brought together theseangular plates diverge from each other.`

is n strip or plete of metal which has its edges bent inwardly et anecute angle with the central plane surface, and these edges ere designedto interlock with the outwardly turned edges 5** of the plates 5. Thuswhen the casing hns been closed about the pile, these meeting edges areinterlocked by it series ol' the plates 6 engaging with the fixedn-ngulin' plates of the casing, or by s. continuous plate..

Ult will be understood that any equivalent means for closing andsecuring tlf casings may be ell'ected; it heilig onlv dcsreble to closethe. cnsings after they are litted.

The concrete or nniteristl of which the cssings are formed, ispreferably reinforced b metal wire. fabric or steel or iron rods whichmay extend longitudinally and circumferentially within the concrete andso es to give it the requisite strength. The meeting ends of thesesections may be made toregister and remain in proper position bylieveling or Hanging, or they may be provided with annular rings havingupwardly or downwardly turned flanges which will ,engage the meetingendsof the sections. The lower end of 'the lowermost section `may beprovided with a shoe or guide 7 which is fitted to the end es shown, andthis serves to'nniintein the. proper specc between the pile and thecasing to provide the `necessary annuler channel for the subsequentlilling of concrete which is introduced after the casing sections are inplace.

lily device is ep )lied as follows: .The lowermostsection is placed inhalves around the pile above the water. 'lhe sections nre then connectedand lowered into the mud or material in` which the pile is driven, theshoe ecting ns :t guide to maintain these sections in place and they maybe afterwards ressed, driven, or otherwise i'orced into t iesub- As'soon thel iirstsection is lowerec with its top approximately neer thesurface of the water, another section is added and connected thereto,and so on until the entire pile has been inclosed to the top, orcontiguous to 'the lower surface oi the super-structure which is suported bythe pile. s

in ceses Where the piles have not received l pile being thus completed,the Water may be l' claim end desire to r gather at one side of thecasing, and

Vpumped roni the interior space, and this space filled with concrete inthe usual manner, thus rnalinv a solid casing `vithin which thepile isembe' ded.

having thus described my invention, what securehy Letters Patent isv l.The combination with a pile, of a hollow concrete casing made insegments hinged together along one of their longitudinal edges, andmeans for detachably securing the opposite edges of said segments.

2. An inde' endent hollow casing formed oi longitudine ly dividedsegments, the adjacent edges of the segments being hinged todetachableconnections for uniting the meeting edges of the sections at the oposite side oi the casing, said casing adapte( to inclose a pile and toprovide space for an intermediate filling of concrete.

An independent hollow concrete'casing consisting of serni-cylindricalsegments, said segments having hinging eyes embedded in the meeting ed.on the side7 and hinge pins connecting sai( eyes, or angular platesenibedded in the opposite edges of the segments,

seneca and angularly bent plates interlocking therew with to secure thesegments in the cylindrical structure.

4. A hollow concrete casing formed of .semi-circular segments, meansforming ya hinged connection alon the meeting edgesof the segments atone si e of the casing, pro-J jections on the adjacent edges ofthesegments at the"othe1 side of the casing, and means detachablyengaging said projections to lock the segments together. i

5. A ile-protecting deviceoonsisting of semi-cylindrical segments havingsuitable' locking devices upon their opposite edges whereby they may beiitted around a pile to forni an annular channel, means by Whichthe-ends of said casings are itted in line' with each other, and a shoeor guide maintaining an even channel around the pile While the casing isbeing sunk to position.

6. A means for rotecting piles7 said means consisting of vcyliindricalsegments having hinged or interlocking closing devices at the edge 5, ashoe vfor guiding the bottom of the lower section around the pile, meansfor uniting and maintaining the super osed sections in alineinent, 'andanchor i olts pi'o- A oim an attachment for the super-struc ture.

ecting upwardly from the top section tov In testimony whereof I havehereunto set my hand in presence of two subscribing witnesses. r

FREDERICK A. KOETITZ. Witnessesz l C. A. PENFIELD, S. H. N oURsE.

